Feed mechanism



Sept. 15.1925. 1,553,350

E. E, WINKLEY FEED MECHANISM Filed Jan. 21, '1921 6 Sheets-Sheet 1 Sept. 15. 1925.

' I E. E. WINKLEY FEED MECHANISM Filed Jan. 21. 1921 6 Sheets-Sheet 2 a, W g/z 202 Sept. 15, 1925.

E. E. WINKLEY FEED MECHANISM Filed Jan. .1, 1921 6 Sheets-Sheet 3 Sept. 15, 1925. 1,553,350

E. E. WINKLEY FEED MECHANISM fljirwss Jiwgntvr Sept. 15, 1925. 1,553,350

E. E. WINKLEY FEED MECHANISM Filed Jan. 21. 1921 6 Sheets-Sheet 5 Sept. 15, 1925. 1,553,350

E. E. WINKLEY FEED MECHANISM Filed Jan. 21. 1921 6 Sheets-Sheet 6 Patented Sept. 15, 1925. i

UNITED STATES PATENT OFFICE.

ERASTUS E. WINKLEY, 0F LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATEB-SON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FEED MECHANISM.

Application filed January 21, 1921. Serial No. 438,990.

T 0 all whom it may come-rm:

Be it known that I, ERASTUS E. VViNKLnr, a citizen of the United States, residing at Lynn, in the county of Essex and State oi Massachusetts, have invented certain new and useful Improvements in Food Mechanisms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to mechanisms for feeding articles in regular succession to op erating instrumentalities, and it has special reference to heel compressing machines provided with mechanism for supplying a sec cession of heels to be compressed.

In applicants Patent No. 1,334,478, grant ed March 23, 1920, and assigned to the United Shoe Machinery Corporation, a feed mechanisn'i of this general character is set forth as applied to a heel compressor, and in connection therewith, means is provided for detecting any interruption or hiatus in the succession of heels and for interrupting the effective o ieration of the con'iprossing instruinentalities in order to prevent injury thereto if brought into contact in the absence of a heel tooperate upon. In the pa"- ented machine, however, the detectingmecl'n anism is located at a point considerably in advance of the compressing station, so that although a heel may be found present at the detecting station, there is no El-SSL mice that it will be safely transferred through the several intermediate stations and presented to the compressing instrumentalities.

One of the objects of the present invention, therefore, is to improve and simplify the construction and operation of n'iachines of the general type of the patent above referred to, and to provide effective and reliahle means for insuring an interruption of the effective operation of the machine when there is a failure to present an article to the operating instrumentalities Accordingly, one of the features of the invention resides in the provision of detecting means immediately adjacent the operating instrumentalities, Which, in the event of a hiatus in the succession of articles supplied to the machine, functions to prevent the effective operation of the operating instrinnentalities.

In machines for performing operations upon a succession of articles presented there to, it is frequently desirable or necessary to change or adjust the operating instrumentalities after all the articles of a particular kind, size, or other characteristic have been operated upon, in order to adaptthe machine for Work upon a series of articles differing in kind, size, or other characteristic.

Another object of the invention, therefore,

is to provide means for determining When the last article of a series or succession of similar articles has been operated upon and then automatically interrupting the effective operation of the machine.

To this end, another feature of the invention contemplates the utilization of a blank or dummy Which the operator places on the supply mechanism at the end of the succession or articles of predetermined characteristics, and the provision of detecting mechanism located adjacent the operating instrumentalities for determining When the blank reaches its region of operations and for automatically preventing the effective operation of the machine. Preferably, in this instance, the operation of the machine is completely arrested, as by disconnecting the machine from its source of power.

In a more limited aspect, another object of the invention is to provide a heel compressor, to Which a succession of heels are supplied, and the operation of Which is either modified or completely, arrested in accordance with the occurrence of a hiatus in or a termination of the succession of heels being supplied thereto.

To the attainment of this object, another feature of the invention lies in the provision of a heel compressor Which is supplied With a succession of heels by means of a conveyer. The heels are successively transferred from the conveyer to the compressing instrumentalities by a mechanism which also serves to detect the absence of a heel and to temporarily modify the operation of said instrumentalities pending the existence of he interruption or hiatus in the supply of heels. Moreover, an auxiliary detecting mechanism is provided at a station adjacent the compressing devices to determine the presence of a blank or dummy located at the end of the succession of heels, said detecting mechanismbeing operable under such conditions to arrest the operation of the machine and permit the change or adjustment of the compressingdies .to accommodate a following successionof heels of a different size, shape, or other characteristic from those previously supplied by the conveyer.

These and other objects of the invention and the features by which they are attained will be readily understood from the following description of the preferred embodiment of the invention illustrated in the accompanying drawings.

In the description and claims, the phrase interrupt the effective operationis employed in a broad sense to ,signifyany interruption of the effective or normal operation of the machine upon the work, whether it be caused by an arrest of the operation .as by disconnecting the machine, as a whole, from thesourceo f .power, or by merely mod.- ifying the operation of the machine. As distinguished from the phrase just defined, modifying the ,operation is used in a more restrictedsignificance, in the sense of temporarily varying, shifting, adjusting or interrupting the normal or'efiective operative movements of the compressing instrumentalities upon the work, during the continued operation of certain other parts of the machine. 7

The invention will be best understood from a description of the preferred embodiment thereof illustrated the accompanying drawings in which the invention has been shown, for purposes of description, as applied to a heel compressor of the character of that disclosed in applicants hereinbeforementioned patent No. 1,384,478. It is to be understood, however, that certain features of the invention are not restricted to use in connection with a heel compressor, but are capable of general utility in machines of widely different types and for performing various operations upon articles of .a materially different nature.

In the drawings, Figure 1 is a view in side elevation, partly broken away, of feed mechanism constructed in accordance with the present invention and utilized in connection with a heel compressor of the character disclosed in said patent; Fig. 2 is a top plan view of the heelcompressor feed mechanism shown in Fig. 1; Fig. 3 is a View, partially in plan and partially in section, of the invention, showing particularly the various feeler or detector mechanism which control the operation of the compressor, the section being taken substantially on the plane of the compressing instrumentalities; 4 is a detail view, in side elevation, of a portion of the mechanism shown in 3; Figs. 5 and 6 are views in plan and side elevati'on, respectively, of the heel compresser and associated mechanism shown in Fig.

3, these views being on a still further enlarged scale, and portions of the frame belng broken away to .dlsclose e tai o th operative parts Fig. 7 is a fragmentary view, in front elevation, of the heel compressor and associated detector mechanisms; and Fig. 8 is a view in front elevation, of the belt-shifting device associated with the main driving shaft.

The heel compressor, in connection with which the feed mechanism embodying the present invention is employed, is similar in its general characteristics to the compressor disclosed in applicants Patent No. 1,334.- 478, above referred to. The construction and mode of operation of the compressor need not, therefore, be described in' detai'l. Briefly stated however, the compressor, which is indicated by the general reference character 10 in Figs. 1 and 2, is provided with the usual heel compressing instrumentalities comprising a stationary heel seatdie 12 (Fig. 7) supported by a rigid yoke 14 constituting the upper portion of the frame of the machine, a top lift die 16' (Fig. 3) carried by a vertically reciprocating cross-head 18, andtwo side compressing ,dies 20 slidably mounted for lateral movement toward and from each other on the upper face of the cross-head 18, these various dies cooperating to compress and shape a heel in the usual manner. The heels to be operated upon are introduced singly between the side dies 20 by means of a feed slide 22 (Figs. 2 and 3) which is horizontally movable 0n slide guides 24 (Fig. 7) on the usual feed table 26, which is secured to the cross-head 18 and reciprocates vertically therewith. The cross-head 18, like that described in said patent, is guided in its upward and downward movements by suitable guide ribs 28 (Figs. 3 and 7 on standards 30 constituting part of the frame of the compressor. The means for actuating the cross-head 18 comprises the usual toggl e 32 (Fig. 1) which is operated by a pitman 34 (see also Fig. 2) connected with a horizontal crank shaft 36, the latter being geared as indicated at 38 to an intermediate shaft 40 that is driven from a main drive shaft 42 through intermeshing gear wheels 44. In the present construction, the main drive shaft 42 is provided at one end with a fast pulley 46 (Figs. 2 and 8) and a loose pulley'48 which are adapted to receive a belt 50 that is connected with any suitable source of power. The end of the drive shaft 42 which carries the pulleys 46 and 48 is supported in suitable bearing brackets 52 and a belt-shifting device 54 of a well known type is employed and adapted to be automatically actuated by means of mechanism hereinafter to be described, to disconnect the compressor from its source of power.

The heel compressor 10 is provided with means for automatically feeding to it a succession of rough heels and for discharging the compressed heels from the dies at the same rate at which they were fed thereto. The means for feeding the heels to the compressor comprises a feed conveyer 58 (Figs. 1 and 2) and a transfer device 60. The conveyer 58, to which heels may be supplied in any convenient manner at a receiving station 62, is adapted to carry the heels to a transfer station 6 1 at one side of the compressor. The transfer device 60 is adapted to remove the heels from the con veyer at the transfer station 64 and to deposit them upon the feed slide 22 of the compressor.

"- In the illustrated embodiment of the invention, a feed conveyer of novel and improved construction is employed for bringing the heels to the transfer station 64;. As shown in Figs. 1 and 2, the improved conveyer comprises a plurality of individual sections or carriages 68 which are arranged end to end in abutting relation and are supported between a. pair of endless tracks or guideways 70 along which they are adapted to be advanced. The conveyer tracks 7 O severally consist of channel. iron bars which are arranged side-by-side with their channeled faces opposed. The track structure is made rigid by reinforcing plates 71 and the opposite sides of the track structure are connected in spaced rela tion by suitable cross bars 72 which extend between opposite plates 71. The entire structure is supported at its opposite ends, by suitable brackets 73, the brackets at the delivery end of the conveyer being secured to an upright frame member 74 which is rigidly secured to the standards 30 of the compressor, while the supporting brackets at the receiving end of the conveyer rise from a suitable base 76. A portion of the conveyer tracks intermediate the opposite ends of the conveyer is inclined as shown in Fig. 1.

As best shown in Figs. 5 and 6, the individual sections or carriages 68 of the con veyer 58 each comprise flat plates upon which the heels may rest base lift down. Each carriage 68 is provided at its forward and rear ends with transverse pivot rods 7 8 upon the opposite extremities of which are mounted rollers which are received in the channels of the conveyer tracks. A suitable transverse rib 82 rises from the rear end of each conveyer carriage 68 to engage the breast end of a heel and prevent the heel from sliding off the carriageas the latter is advanced up the inclined portion of the conveyer tracks.

The means for advancing the conveyer comprises an actuator slide 84 (Figs. 1 and 2) which is mounted to reciprocate on a horizontal guide rod 86 that is arranged parallel to the conveyer tracks, below the upper stretches thereof, at the receiving end of the conveyer. Suitable brackets 88, se cured to. the plates 71, support the guide rod 86 at its opposite ends. The actuator slide 84 carries a suitable spring-pressed feed pawl 90, which is adapted to engage one of the transverse pivot rods 78 of each of the carriages 68 in succession to'advance said carriages as the slide is moved forwardly on the guide rod 86. The advance of the conveyer carriage which is directly engaged by the feed pawl 90 is communicated to all the other carriages each of which is moved through a space equal to its length, thus advancing the conveyer one step to bring a new heel to the transfer station 64: ready to be seized by the transfer dev'ce 69. To prevent retrograde movement of tie conveyer, due to the tendency of the loaded carriages to slide down the inclined portion of the conveyor track between successive feed movements, a suitable detent 92 is provided to engage one of the rollers 80 on the carriage last acted upon by the feed pawl 90. The detent 92 is adapted to yield to permit said roller to pass beyond it and then to become operative to prevent the return of the carriage.

The actuator slide 84: is reciprocated to advance the conveyer through one step or feed movement by means of cam-actuated mechanism including an oscillatory arm 9& (Figs. 1 and 2) which is pivoted at its lower end upon a bracket rising from the base 76 and is slotted at its upper end to receive a stud 95 projecting from the side of the actuator slide. The arm 94 is connected by a link 96 with an arm 98 which is secured to one end of a horizontal rock shaft 99 that is journaled in a bracket secured to the standard 30 of the compressor. to the opposite end of the rock shaft 99 is another arm 100 which is connected by a link 102 to the upper end of a level 10a,

Secured the latter being pivoted at 106 to a bracket secured to the standard 30. At its lower end, the lever 104 carries a cam roll 108 which rides upon the periphery of a cam 110 that is secured to one end of the crank shaft 36. A spring 112 (Fig. 1), secured at one end to the lever 104: and at its opposite end to one of the standards 80,-holds the cam roll 108 against its cam and serves to return the actuator slide 84 after each forward movement thereof. The cam 110 acts at each cycle of operations of the ma chine to cause the actuator slide 84 to impart one step movement to the conveyer 58 to bring a. new heel to the transfer station 6 1.

The reciprocating feed slide 22 of the compressor 10 is substantially the same in construction and mode of operation as the feed slide described in the patent already referred to and therefore will not be described in detail herein. It should be understood,-however, that the feed slide is provided with a pair of pivotally mounted articulated arms 116 (Fig. 3) carrying the usual clamp fingers 118 which are actuated to grasp a heel delivered thereto by the transfer device and to release the heel when the feed slide has advanced it into position to be operated upon. The forward ends of the clamp fingers 118 constitute the usual ejectors 120 for removing the heels from the compressing instrumentalities on the cross-head after they have been compressed. For more specific details of the construction and operation of the feed slide, reference may be had to said patent.

The heels to be operated upon are transferred from the conveyor 58 to the compresso-r in regular succession by the transfei; device 60 which operates in time relation with the conveyor and the heel compressing operation. The transfer device 60 is the same in construction and mode of operation as the corresponding device disclosed in the above mentioned patent and described in greater detail in Letters Patent of the United States No. 1,213,052, granted January 16, 191.7, to the present applicant and assigned to the United Shoe Machinery Corporation. In accordance with the present invention the transfer device 60, in addition to performing its heel transferring function, serves also to detect an interruption or hiatus in the supply of heels upon the conveyor and when such interruption occurs, to immediately interrupt the effective operation of the machine, in the present instance, by modifying the operation of the compressing instrumentalities. Accordingly, the construction and mode of operation of the transfer device, 60 will be described herein only with sufiicient particularity to cause its detecting operation to be clearly understood. For a com plete and detailed description of the transfer device, reference may be had to said patent.

The transfer device 60 of the present machine, like that of Patent No. 1,213,052, just referred to, comprises two gripper jaws 124 and 126 (Figs. 2, 3, 5 and 6) which are adapted to seize a heel by its opposite lateral faces, and a body member 128 which carries the gripper jaws and is mounted to rock on a horizontal pivot rod 130 to transfer a heel from the conveyor to the compressor feed slide 22. As best shown in Fig. 5, the gripper jaws of the transfer device are provided with straight parallel shanks which move in slideways in the body member 128. In order that these jaws may be actuated to grip and release a heel, or to detect the absence of heel, the shanks of the jaws are provided with rack teeth on their inner faces and these teeth are engaged by a pinion 132 that is journaled in the body member 128.

The pinion 132 isia 'lsolengaged by rack teeth 134 on the rod 130, the latter constituting means for actuating the gripper jaws .as well as providing a pivot about which the body member 128 may be rocked for the purpose of transferring a heel from the conveyer to the feed slide. The rod 130 extends loosely through the body member 128 and is mounted for longitudinal sliding movements in guideways 136, 138 and 140,

the guideway-s 136 and 138 being formed at the upper end of the stationary frame member .74, while the guideway 140 is secured directly to the yoke 14 of the frame .of the compressor.

As in the machine of said patent, the rod 130 is adapted to be moved through the body member128 toward the right, viewing Fig. 5, by means of a spring 142 which is coiled around the rod between the guideway 140 and a collar 144 which is secured to the rod. This movement of the rod 130, transmitted through the pinion 132 to the shanks of the gripper jaws, causes these jaws to move toward each other for the purpose of gripping a heel upon the conveyor or detecting the absence of the heel. The rack teeth on the rod 130 are annular in form so that while the h'eel is held .between the gripper jaws, the body member of the transfer device may be rocked around the rod to transfer the heel to the feed slide and at the same time invert it ,so that it may be de posited top lift down upon the feed slide, in which position it is delivered to the compressing dies.

For the purpose of spreading apart the gripper jaws ;to release a heel after the heel has been transferred to the feed slide, the

rod 130 is moved through the body member 128, toward the left in Fig. 5, against the action of the spring 142. As in the patent last referred to, the means for producing this movement of the rod 130 comprises a lever 146 which, as best shown in Fig. 6, is pivoted at 148 to the standard 74, the upper end of this lever being adapted to engage .the forward end of'the rod 130. The lever 146 has a depending arm which carries a roller 150 which cooperates with a cam 151 i on a vertical plate 152, the latter constituting a portion of the frame work of the feed table 22 and reciprocating vertically with said table and cross-head. This cam comprises a block 154 which is fixed to the plate 152, and a movable part or latch 15.6 which is carried bysaid plate beneath the block 154. The lever 146 is also provided with a forwardly extending arm 158 which is adapted to be engaged by an abutment 160 on the plate 152, for the purpose of rocking the lever to slide the rod 130 in a direction to open the gripper jaws of the transfer device.

In performing its function of transferring heels from the conveyor to the feed slide of the compressor, the transfer device operates as follows: As the crosshead and feed table rise, the roller 150 on the lever 146 occupies a position to the left of the cam block 154, viewing Fig. 6, so that the lever at this time has no effect on the rod 130. During this upward movement of the cross-head, the transfer device 60 is operating to transfer a heel from the conveyer to a position above the feed slide. As the crosshead approaches the limit of its upward movement, the abutment 160 engages the arm 158 of the lever 146 and rocks the lever in a direction to slide the rod 180 to the left in Fig. 6 and thus open the gripper jaws. This movement of the lever 146 carries the roller 150 forwardly across the face of the cam latch 156 until it clears the end of the latch, whereupon the latch functions to prevent the return of the lever. Upon the subsequent descent of the cross-head, the lever 146 is prevented from swinging under the influence of the spring 142 so that the gripper jaws are held open. During this time the transfer device is being rocked in a direction to bring the gripper jaws into position to engage another heel on the conveyer. At the termination of the downward movement of the cross-head, however,the cam block 154 desoends entirely below the roller 150, where upon the spring 142 forces the slide rod 130 forwardly, thus closing the gripper jaws to seize a heel if one is present at the transfer station.

The construction and mode of operation of the transfer device 60, as thus far described, is substantially the same as in Patent No. 1,213,052, hereinbefore referred to. In accordance with the present invention, however, as already stated, the transfer device 60 performs also the additional function of detecting a hiatus in the succession of heels fed to the compressor. By thus employing the transfer device 60 as the detecting means, a hiatus may be detected at a point immediately adjacent the heel compressing instrumentalities. With this arrangement, therefore, there is no opportunity for the loss of a heel from the supply mechanism between the detecting station and the compressing dies, and consequently no danger of injury to the dies by being brought together in the absence of a heel to operate upon.

hen a hiatus in the succession of heels occurs and one of the conveyer carriages 68 reaches the transfer station 64 without a heel, the gripper jaws of the transfer de vice 60 will be permitted to approach each other more closely than in gripping the smallest heel upon which the compressor. is adapted to operate. The increased movement of the gripper jaws, due to the fact that no heel is interposed between them,

causes the slide rod 130 to be moved forwardly (toward the right in Fig. 5) through a greater distance than said rod is permitted to move when a heel is present 011 the conveyer at the transfer station 64. This excess movement of the slide rod 130 is utilized, as will be hereinafter explained, to render the compressor effectively inoperative. If, for any reason, the heel should be dislodged from the jaws of the transfer device and lost while in transit to the feed slide, the jaws would immediately move inwardly to render the compressor effectively inoperative in the same manner as if the heel were found to be absent at the transfer station.

The mechanism for swinging the body member 128 of the transfer device 60 about the pivot rod 180 is also the same in construction and mode of operation as that of corresponding parts in the above mentioned Patent, No. 1,213,052. Only a brief and general description of this mechanism will be given inasmuch as the specific details of construction may be ascertained, if desired, by reference to said patent. In the present construction, as in the construction described in said patent, the body member 128 of the transfer device is provided with a pinion164 (Figs. 3, 5, 6 and 7) which is engaged by a rack 166 that slides vertically in a slideway in the stationary frame member 74. As best shown in Fig. 6, the lower end of the rack 166 is connected through a link 168 with a downwardly extending arm 17 0 of a rocker device which is mounted to swing freely upon a stud 172 projecting inwardly from the frame member 74. This rocker device is provided with a second arm 174 which is connected with the first arm so that the two arms will be rocked simultaneously through a portion, at

least, of the movement of the arm 174. The arm 174 carries a cam roll 176 which engages a slot in the face of a cam 178 con stituting a part of the frame work of the feed table, so that the cam 178 rises and descends in accordance .with the vertical movements of the feed table while the stud 172 remains stationary. Accordingly the arm 174 is rocked about the stud 172 by the vertical movements of the cam 178 and this movement is transmitted to the arm compressor but which shifts or modifies the paths of movement of the side-compressing dies so that these dies will not come into th operative positions they normally assume in compressing a heel, although the heavy moving parts of the compressor continue to operate as usual. 7

To this end, as described in said patent, the side-compressing die 20 at the left side of the machine is connected by means of double pitmen 182 (Figs. 3 and 7 with eccentric portions of an eccentric shaft184, which is journaled at one side of the yoke 14 of the compressor. The side-compressing die 20 at the right side of the compressor is similiarly connected by means of double pitmen 186 (Fig. 8) with an eccentric shaft 188 that is journaled inthe opposite side of the yoke 14. Through the action of the above-described pitmen the side dies 20 are caused to slide to ward and from each other upon the upper face of the cross-head, in the usual manner, as the latter rises and descends. The modifying of thepaths of movement of the side dies is affected by turning the eccentric shafts 184- and 188 to move'the axes of oscillation of the pit-men 182 and 186 in opposite directions so'as to draw the dies away from each other. The side dies are thus prevented from moving into operative position when the cross-head rises from the compressing operation.

Certain elements of the mechanism for turning the eccentric shafts 184 and 188 to modify the paths of the side dies 20, are the same in construction and mode of op eration as. corresponding parts disclosed in Patent No. 1,334,478, above referred to, while other elements of said: mechanism are of an improved construction embodying certain features of the present invention. The elements of this mechanism which are like those of said patent, will now be described briefly, referencebeing had to said patent for more specific details of construction. These, elements comprise a pair ofeccentric shifting members 190 and, 192 (Figs. 8 and 7) for th eccentric shafts 184 and 188, respectively. The forward-ends of the eccentric shafts project beyond the yoke 14 and are squared to enter squared holes in the eccentric shifting members. The eccentric shifting member 190 is providedwith an outwardly projecting hub upon which is mounted a plate 194 (Fig 7), the plate being rigidly but-adjustably secured to the member 190 by means of a bolt 1% which extends through the plate and through a segmental slot 196 in the member 190. The plate 194 is connected by a link 197 with an arm 198 that is fast on a rock shaft 200 (see also Figs. 1 to 4, inclusive), which is journaled in ears 202 on the yoke 14. The eccentric shifting member 192, at the opposite side of the compressor, has secured thereto a plate 203 similar to the plate 194 and the plate 203 is connected by a link 204 with an arm 206 fast on a rock shaft 208 which corresponds to the rock shaft 200 and is journaled in cars 210 on the right side of the yoke 14. The rock shafts 200 and 208 project beyond the rear of the compressor and their projecting ends are provided with arms 212 and 214, respectively (Figs. 2 and 3), which are connected together by a link 216. By means of this construction, both eccentric shafts 184 and 188 are constrained to turn in unison as they are adjusted for the purpose of modifying the paths of movement of the side dies.

In accordance with the present invention, the improved portion of the mechanism for turning the eccentric shafts 184 and 188 comprises a short rod 220 (Figs. 1, 5, 6 and 7), the upper end of which is pivoted for vertical swinging movement on a stud 222 by means of which the link 19'? is connected with the arm 198 on the rock shaft 200. Normally the pivoted rod 220 is disposed in the angular position indicated in Fig. 7 but it is adapted to be swung about its pivot stud 222 to bring its lower end into vertical alinement with a periodically reciprocating actuator rod 224, so that it may be engaged and lifted by the latter to actuate the cocentric shifting members.

As shown in Figs. 1, 2 and 7, the actuator rod 224 is supported for vertical sliding movement in guideways 226 on one of the standards 30 of the compressor. The means for reciprocating the actuator rod 224 comprises a cam lever 228 that is pivoted on the stud 106 alongside the lever 104, one end of the lever 228 being slotted to receive a pin 230 projecting laterally from the rod 224. The other end of the lever 228 carries a cam roll 232 (Figs. 1 and2) which rides on the periphery of a cam 234 fast on the crank shaft 36. The cam 234 acts to reciprocate the actuator rod 224 once for each cycle of operation of the machine.

The means, above described, for turning the eccentric shafts 184 and 188 to modify the paths of movement of the side dies is controlled by the means for detecting the hiatus in the succession of heels fed to the compressor, which, as already stated, comprises the jaws 124 and 126 of the transfer device 60.

When the jaws of the transfer device 60 detect the absence of a heel on the conveyer at the transfer station 60, the pivoted rod 220 is swung into vertical alinement with the actuator rod 224 so that the latter upon its next upward movement will lift the rod 220 to actuate the eccentric shifting memhere.

The means for swinging the pivoted rod 220 into and out of operative position is best shown in Figs. 5, 6 and 7. As therein shown, the pivoted rod 220 extends through the slotted end of a link or bar 238 which is arranged to slide in a horizontal groove 240 in a bracket 242 that is secured to one side of the yoke 14. The other end of the link 238 is pivotally connected to one arm of a bell crank lever 244, which is pivoted at 246 to a lug projecting from the bracket which carries the guideway 140 of the slide rod 130. The other arm of the bell crank lever 244 extends transversely above the guideway 140 in front of a pin 248 which is carried by the slide rod 130 and projects through a slot 250 (Fig. 5) in the Wall of said guideway. A spring 252, secured at one end to one arm of the bell crank lever 244 and at the other end to the bracket 242, normally retains the lever 244 and link 238 in the respective inoperative positions, shown in Fig. 5. When said lever and link are thus inoperatively positioned, the pivoted rod 220 is maintained out of vertical alinement with the actuator rod 224, as shown in Fig. 7, so that the actuator rod 224 reciprocates idly.

The pin 248 on the slide rod 130 is so lo cated relatively to the free extremity of the adjacent arm of the bell crank lever 24 that when the slide rod 130 is moved by the closing of the gripper jaws upon a heel, the pin will not come into contact with the bell crank lever, but when the slide rod has imparted to it the increased movement resulting from the absence of a heel between the gripper jaws at the transfer station, said pin will engage said bell crank lever and rock the lever to slide the link 238, and thus swing the pivoted rod 220 into alinement with the actuator rod 224. Thereafter, when the actuator rod 224 is raised. at the proper time in the cycle of operations of the machine, the movement of the actuator rod will be transmitted through the rod 220 and the arm 198 to the rock shaft 200. The movement of the rock shaft 200 will, in turn, be transmitted through the arm 212, the link 216 and the arm 214 to the rock shaft 208 upon the opposite side of the compressor. In this way both eccentric shafts 184 and 188 will be rocked through the agency of the respective shifting members 190 and 192. As a result, the paths of movement of the side dies 20 will be modified so that these dies will not be moved into compressing positions upon the succeeding upward movement of the cross-head.

The time relation between the movements of the compressing instrumentalities, the feed slide, the conveyor and the transfer device of the present invention is the same as the time relation between said mechanisms in the machine of the above mentioned Patent No. 1,218,052. The cycle of opera tions of said machine being fully described in said patent, it will 1.101; be necessary to describe in detail herein the cycle of operations of the mechanisms thus far described as embodying the present invention. It should be understood, however, that in the present construction the absence of a 118 will be detected during that cycle in which the heel, if present, would be transferred to the feed slide of the compressor and that this cycle immediately precedes that in which the heel, if present, would be compressed. As a result there is no opportunity for the heel to be displaced and lost from the supply mechanism after the performance of the detecting operation so that it will fail to be presented in posit-ion to be operated upon by the compressing dies. This arrangement, therefore, positively prevents injury to the dies by being brought into contact in the absence of a heel to operate upon.

After all the heels of a particular series or run, consisting of heels of the same size and style, have been delivered to the conveyor, it is desirable, in order to economize time, to be able to immediately supply to the conveyor the next series of heels of different size orstyle; The heels of the second series, being different from those of the first series, it is necessary that the compressing dies of the heel compressor be changed correspondingly before said heels are operated upon. To permit such change of the dies, the compressor must: be stopped when the last heel of the first series has been compressed.

in order that the operation of the com pressor shall be automatically stopped after the last heel of a particular run or series of heels has been operated upon, a blank or dummy is placed by the operator at the end or termination of the series of heels so that it will be advanced with the heels to the compressor, and an auxiliary detecting mechanism is provided to determine the presence of the dummy at the station adjacent the compressing device. The auxiliary detecting mechanism is operative under these conditions to interrupt the effective operation of the compressor. This is accomplished, in the present instance, by shifting the driving belt to the loose pulley 48 so that the compressor will be brought to rest. The operator may then change the dies to accord with the size or style of heels in the series or run of heels next to be operated upon. 7

This blank or dummy is indicated at 256 in Figs. 1 and 6, and as shown, comprises a substantially square block having a recess 258 therein. The dummy 256 is placed upon the conveyer immediately following the last heel of a series of heels of the same size or style, the dummy being positioned with its recessed face uppermost, as indicated in said figures.

When the dummy 2.5.6 is advanced by the stationary frame member 74.

- conveyer to the position indicated in Fig.

which is one step removed from the transfer station 64, the dummy is engaged by a periodically reciprocating feeler or detector 260 constituting a part of the auxiliary detecting mechanism, above referred to. The feeler 260 consists of a short finger which is disposed vertically above the conveyor, at a lateral distance equal to one feed step of the heels from the transfer station 64. As best shown in Figs. 6 and 7 the feeler 260 depends from an arm 262 rigidly secured to a vertical rod 264 which is mounted to slide longitudinally in guideways 266 on the A coiled spring 268 surrounds the rod 264 between the upper guideway 266 and a collar 2'70 which bears against a shoulder formed on the rod, the force of the spring tending to depress the rod 264 so as to move the feeler 260 downwardly toward the conveyer. Normaly, however, the rod 264 is pressed upwardly, against the action of the spring 268, .to maintain the lower end of the feeler 260 at the elevation shown in Fig. 7,'so that the feeler will not obstruct the movements of the heels as they are advanced by the conveyer. To this end, the lower portion of the rod 264 is made of greater diameter than its upper portion, and the enlarged lower portion of the rod is slotted as indicated at 272 (Figs. 6 and. 7) to receive the upwardly extending arm of a bell crank lever 274 that is pivoted at 276 to a bracket on the stationary frame member 74. The bell crank lever 274 has a downwardly ex tending arm 278 carrying a cam roll 286 which is held by the force of the spring 268 against the face of a cam 282 which is formed on the side of the vertical plate 152 that constitutes a part of the frame work of the feed table and reciprocates vertically therewith. The cam 282 is provided with an inclined portion 284 which is designed to permit downward swinging movement of the .bell crank lever 274, under the influence of the spring 268, so that the feeler 260 will be moved downwardly to a point closely adjacent the conveyer if no heel or dummy is present beneath it.

The enlarged lower end of the rod 264 is provided with a second slot 286 (Fig. 7) which is located below the slot 272 and is adapted-to be entered by a curved finger 288 projecting from the upper end of a lever 290 that is fulcrumed on a stud 292 carried by the stationary frame member 74'. The lever 290 has a depending arm 294, carrying a cam roll 296, which is adapted to engage the .face of a cam 298 on the side of the plate 152, that is movable vertically with the feed table. The face of the cam 298 has an inclined portion 300 which is designed to 286 in the rod 264 when said slot is brought into registry with said finger. The lever 290 has a second depending arm 302, and this arm is connected by a link 304 with the upper end of a lever 306 (Figs. 2 and '8) pivoted at 308 to a bracket 310 on the frame of the compressor. The lower end of the lever 306 has secured thereto one end of a spring 312, the opposite end of which is secured to a pin 314 projecting from the compressor frame, the force of this-spring holding the roll 296 against the cam 298. At its lower end the lever 306 is connected by means of a link 316 with the upper end of a latch 318 constituting part of the belt-shifting device 54. The latch 318 is pivoted at its lower extremity between ears rising from a floor bracket 320. A spring 32 tends to swing the latch 318 in a direction to maintain a shoulder 324 at the upper end of the latch in holding engagement with the free end of an arm 326 which is fast upon a rock shaft 328. The rock shaft 328 is mounted to turn in bearings formed in a lug 330 rising from the floor bracket 320 and in another floor bracket 331 (Fig. 2) which is located at the opposite end of the rock shaft. Fixed to the rock shaft 328 is an upright belt shifting arm 332 (Fig. 8). A spring 334, one end of which is received in a socket in the floor bracket 320 and the opposite end in a socket in the arm 326, presses upwardly on said arm and tends to swing the belt-shifting arm 332 to transfer the driving belt to the loose pulley 48. The latch 318 normally holds the arm 326 against the force of the spring 334 so as to maintain the shifting arm 332 in the position shown in Fig. 8, in which position the driving belt is caused to pass over the fast pulley 46 to drive the machine. lVhe-n the latch 318 is tripped to release the arm 326 the spring 334 acts through said arm to rock the shaft 328 and swing the belt shifting arm 332 in a. direction to transfer the driving belt from the fast pulley 46 to the loose pulley 48, and thus disconnect the machine from its source of power. Movement of the rock shaft 328 under the influence of the spring 334 is limited by the engagement of a stop 336 with the base of the floor bracket 320. A similar step 338 on the latch 318 prevents the latch from swinging too far toward the right, viewing Fig. 8, after it has been tripped and the rod 304 returned to the left (Fig. 8).

The latch 318 is adapted to be tripped manually by means of a lever 340 (Fig. 8) which is pivoted at 342 to the arm 326 and this lever carries, at its lower extremity, a roller 344 which is adapted to engage the adjacent edge of the latch 318. The upper end of the lever 340 is provided with a suitable handle 346, by means of which the lever may be swung to bring the roller 344 As the cross-head 18 and the feed table 22 rise, and the inclined portion of the face of the cam 282 reaches the cam roll 280, the bell crank lever 274C swings in a counterclockwise direction, viewing Fig. 7, and the :spring 268 causes the rod 264 to slide downwardly, thus depressing the feeler 260 toward the conveyer.

If a heel is present beneath the feeler 260, the latter will be depressed only until its lower end comes into contact with the upper face of the heel, consequently the rod 264 will be arrested after it is moved downwardly a slight distance and before the slot 286 in its lower portion comes into registry with the curved finger 288. As a result, the

lever 290 remains stationary so that the driving belt is not shifted and the operation of the machine is not interrupted.

If no. heel or dummy is present beneath the feeler 260 as the feed table rises, the feeler will be permitted to descend through its full stroke whenthe inclined portion of the cam 282 reaches the cam roll 280 so that the lower end of the feeler will be brought into engagement with the upper surface of the particular conveyer carriage which is beneath it. This movement of the feeler 260 permits the rod 264 to move downwardly to such an extent that when it is finally brought to rest the slot 286 will be positioned below the path of movement of the curved finger 288. In this case also, the lever 290 will be prevented from swinging, and thus. the driving belt will not be shifted from the fast pulley, and the machine will continue to operate. It is to be noted that the cams 282 and 298 are so designed that the former acts upon the lever 274 before the latter acts upon the lever 290, so that there is no tendency for the finger 288 to enter the slot 286 as said slot passes in front of the finger during the descent of the rod 264:.

When, however, the dummy 256 is .present beneath the feeler 260, the latter will descend until .the lower endof the feeler engages the base of the recess 258 in the dummy, and further descent of the feeler will then be arrested. The recess 258 is bored to such a depth in the dummy that when the feeler engages the base of therecess h rein, the slot 286 in the rod 264 will to be operated upon.

be positioned exactly opposite the free end of the curved finger 288. When, as the feed table continues to rise, the inclined portion 300 of the cam 298 reaches the cam roll 296, the finger 288 will enter the slot 286 as the lever 290 is swung under the influence of the spring 312. The latch 318 will then be tripped and the spring 334 will cause the belt shifting arm 332 to transfer the driving belt to theloose pulley. The machine thus being disconnected from its source of power, will come to rest. The operator may then remove the dummy and replace the compressingdies with others of a size and style corresponding to the size and'style of the heels in the new series or run which is next It will be seen from the foregoing description that the present mechanism is adapted to determine eithe-ra hiatus inthe succession of heels fed to the compressor, or the end of said succession, and to interrupt the effective operation of the machine upon the occurrence of either of each conditions. V When a heel fails to be presented,

in position to be compressed, by reason of a hiatus in the succession of heels, the operation of the side compressing dies is modified, by means of the transfer device 60 and the train of mechanism controlled thereby, so that while the other parts of the machine continue to operate as usuahthe side dies will not be brought into compressing-positions. When a heel fails to be presented to the compressing instrumentalities by reason of the fact that the end of the supply or series of heels of a predeterminedsize has been reached, the compressor is disconnected from its source of power, by means of the feeler 260 and the mechanism controlled thereby, so that the operation of the compressor is completely arrested. In either case the compressing dies are prevented fro-m being brought into contact in the absence of a heel to operate upon and therefore injury to the dies is prevented.

Vvhile itis preferred to employ the specific construction and arrangement of parts shown and described, it will-'beunderstood that this construction and arrangement is not essential except so far as specified 111 the claims, and may be changed or modified without departing from the broader features of the invention.

The invention having been described, that which is claimed as new is 1. A machine having, in combination, operating means, means for supplying a succession of articles to be operated upon including a. conveyor for sustaining and advancing a series of articles and a device for" successively receiving single articles from the conveyer and delivering them to said operating means,and means immediately adjacentsaid operating means for detecting a hiatus ii ,said;sulcce ssi on of, articlesi and interrirpting I the eifective operation of. said operating means. 2.: A machine having, in combination, 'ope-ratingmeans, means forxsup pl'ying a succession ofarti'cles tobe operated upon including conveyer for sustaining and 'adfvaneinga seriesof articles andgadevice for successively receiving single articles from the conveyer and delivering them .to said operating means, and means operated periodically to engage each article of ,said series on the cQnVeyerfOiUdGtecting a hiatus in said series and immediately ii'ite'rrupting the .eflect-iveroperation of the machine 3. A machine having, in, combination, operating, means, means for supplying a succession of articles to ibe operatednpo-n, including. a convey-er. for, snstainingaand advancing a series of articles ,and--a d evice for, sriccessivelyg receiving; single, articles from the, conveyer: and delivering them to said operating me'ans,.and meansconstructed and arranged to, transfer .the articles, r from the conveyer to said deviceiand toiinterrnpt the effective operation of; the operating means in the event-- of, the, absence; of I an article in the succession.

45.; A machine having, in, combination,

{operating means, a, stepg-iby step convey'er for advancing, a, succession. of: articles to.v be, operated upon, and; periodically operated -means for l transferring, articles S 10- cessively. from ,said ,con-,veyer\,to said operating means, constructed and arranged to detect the absence. of an article in the'suc'cession; and to, modify 1 the operation of :said: operating means atLthe time ,when theabsentijarticle, if: :present, would 'haye been. operated upon. 40 5:- A machine, having, incom bina tion, means for .molding an article, means for supplyin articles to I be, operated upon, transfer inea'ns for. transferring articles from said: supply means to said molding means, and meanscontro-lledby the, operation..- 'of said transferring means; for interriipting theefl'eqtive operation ofrsaid moldmgr means when nol article is ,snpplied, for thehtransfer meanstolactnpon, I 6;: A machine having, in. combination, means for, molding, an; artiele,, means; for supplying. articles. toQbe L molded and, a single means for transferring ,articlesirom said "supplyvrmeans .to, said moldingtm'eans and for governing the operation, o;E--S2 id molding, meansin accordance ,With the presence ma ,absenceofizan, article .in said, transferring means during the :H'an'sfier'riing. operation. r v v 7:,7A, machine, having,',' combination, a, heel compressor, means, for, feeding xa series ;0f,.=: i e1S in e o p se an mmmen; means intermediaters id feedingrmeans 4 andrcompressonfor ri-nsfi rr ngiheelsirom said feeding means directly to said'com- -said co npressingmeans, an actuatornpr meansfor-srrpplying heels to be compressed,

and a, deyice for transferring heels from i as pply m nsai f feed; lid 6 zsvtm c ed, a d. r ng d t et rrunt he fl er rii rer fiiem a aid emp essi e.m

Whernnoheelj is, present for; the, transfer evicet c -upm- 9.; A, h'eeli compijessor having, in combinaion, pres i g: m an mea sr; p yee s- 9 bwQmp a Sed, d r me s e transferring heels from said supply" means o sa d mnn e sie f neans-z a u e a an o-int r up h efie ti jor lz ien of sa d @c mpi ssin r imeax anh n ,0 heel i pplie f r e ra s e imeans t M llp n- 1. .A e l "c mpr s es s ea n b nat n: r pe i d c ly I Qrera s ompre s me s a n eys r Ensurey ng eels be :qemplf d, an er; ns erat in timed cooperation 3 a with said compressing from the arser-r n "p en in -th m t sai c mr ie si a a s, a means Op r by said transfer means and operative when nehe l P ese ted .byt e s pr y nv y r -the tr ns mans IQ @re a p for interrupting the, reflective operation of said compresslng, means. p

f heel Q 1PJ Z Q U av ng, in ilb nation,, compress ingimeans, a. feed slide for advancing heels ton said compressing means, means for transferring heels froniaf,ren1ote point and depositing them on K said feed slide, and means i 'orv interrupting the efliective operation o f said compressing means ctu ted y the Ope ti e m v m of S id transfernem is f the r n f in means i 'ailsto; deliver a heel tosaid ,feed slide.

12., A heel,co npressor having, in coinbination, compressing means, a. feed slide for advancing heels, to said icompressing, means, me ns er upplyi eel a e c r means including a, pain of; members .for ipp g w eel n, a su m a s s id ran f in r t seida ee s des. and, e n o pemting vwi h; aid asbmr e sm. n 1:- rupting the efl'ective operation of said conipriessingi meansrw e e 1 iPFQSQ l by sa up l a esi thet ens qr a o at MPG-9101'; W r en, wh e 1p tifr maid transfenmeans in transit to, said feed, slide. 3? Ar eel er i re se hav w h em t en eqmp ess s l eanee e si e 1 pply srheel to be ee r s e i me nso r mf rn sheels f rmsai surr ymaes t ly reciprocating and a a p ted, to be renmeans and said cpnveyer for removingheels a iao of movement of said actuating means but adapted to be positioned in the path thereof to be engaged and, actuated thereby to interrupt the effective operation of said compressing means upon the failure of the supplying means to supply a heel to be compressed.

15. A heel compressorhaving, in combination, compressing means, a conveyer disposed adjacentsaid compressing means for supplying heels to be compressed, means for transferring heels from said conveyer to said compresslng means and inverting the heels in transit, and means dependent upon the presence or absence of a heel in said transfer means during the transferring operation for governing the operation of said compressing means in accordance therewith.

16. A machine having, in combination, operating means, means for supplying .a succession of articles to be operated upon, and means for arresting the operation of the machine operating automatically after the last article of said successionhas been operated upon. e

17. A machine having, in combination, operating means, means for supplying a succession of articles to be operated upon and automatic means, including a blank apted to be positioned by the operator at the-end of the succession of articles and ieans for detecting the presence of said blank as it is fedibykth'e supply means to a predeterminedpoint, for v arresting the operation of the machine. i

18. A heel compressor having, in combi nation, compressing means, means for supplying a succession of heels to be compressed by said compressing means the characteristics of which change at some point in the succession, and means controlled by the machine for detecting said point in the suc cession and automatically stopping the operation of said compressing means.

19. A heel compressor having, in combination, compressing means, means for supplying a succession of heels to be compressed, and means, including a blank adapted to be positioned on the supply means at the end of the succession of heels and means for detecting the presence of said blank at a predetermined point on said supply means, to interrupt the effective operation of said compressing means when the last heel of the succession has been compressed.

20. A heel compressor having, in combination, compressing means, means for supplying a succession of heels of predetermined characteristics to be compressed, and means operating in timed relation to the compressing means for arresting the operation of the compressor after the last heel of said predetermined characteristics has been compressed. r

21. A heel compressor having, in combination, compressing means, means for sup plying a succession of heels of predetermined characteristics to be compressed, a blank adapted to be positioned on the sup plymeans at the end of the succession of heels of said predetermined characteristics, and means acting upon each heel as it is presented by said supply means for detecting the presence of said blank and, when detected, automatically arresting theoperation of the compressor.

22. A heel compressor having, in combination, compressing means, means'for periodically operating said compressing means, a conveyor for intermittently supplying a succession of heels of predetermined characteristics to be compressed and a following succession differing from said first succession, and means for determining when the succession of heels of said predetermined characteristics is exhausted and then automatically disconnecting said operating means from its source of power to arrest the operation of the compressing means and prevent its operation on the following succession.

23. A heel compressor having, in combination, compressing means, means for supplying a succession of heels of predetermined characteristics to be compressed and a following succession differing from said first succession, automatic means including a periodically operated detector for engaging the successive heels supplied to determine when the succession of predetermined characteristics is exhausted, and means responsiveto the action of said detector for governing the operation of said compressing means to prevent its operation on the following succession.

24:. A machine having, in combination, operating means, means for supplying a succession of articles to be operated upon, and two means operating independently of each other for determining either a hiatus in said succession or the end of said succession and for governing the operation of said operating means in accordance therewith.

25. A heel compressor having, in combination, compressing means, means for supply ing a succession of heels of predetermined characteristics to be compressed, means for modifying the operation of said compressing means when the supply means fails to present {a fllGGfl to be compressed, and means for determining when the last heel of said predetermined characteristics has been compressed and for automatically arresting the operation of said compressing means.

26, A heel, compressor having, in combination, compressing means, means for sup.- plying a succession of heels of predetermined characteristics to be compressed, and selective means operating automatically for modifying the operation of the compressing means When the supply means fails to present a heel to be. compressed and for arresting the operation .of the compressing means when the last heel of said predetermined characteristics has been compressed.

27. A. heel .compressor having, in combination, compressing means, means for supplying a succession of heels to .be compressed, means for modifying the operation of saidcompressing means When the supply meansfails to present a heel, andmeans including a blank adapted to be positioned on said supply means at theend of theusuccession of heels for determining when the last heel has been compressed and arresting the operation of the compressing-means.

28. A heel compressor having, in combination, compressing means, means for supplying a succession of heels to be compressed, and means for determining, either .a hiatus in said succession or the end of'said-succession and governing the operation of said compressing means, in a diiferent manner in each instance.

29 A heel compressor having, in combination, compressing means, means for supplying a succession of heels to be Compressed, means for detecting a hiatus in said succession, means for detecting the;end- 0f said succession, and means for'mo-difying .or arresting'the operation of'said compressing means in accordance with the determina tions of the respective detecting means.

30. A machine for operating on blanks having, incombination, a blank supply station; means at an operating station for lap plying pressure to a blank; a blank transferrer movable to a definite ipositionat said surp yst t on and than. t a] e it qn. e a d. s ew ng st ens mean "fe presenting ilela k to'beensa ed by a d firstt r e aire when n aidp'esiti n; mea s hel -m i iae r e derin Said p ess r p: p y g n f ect v an ean qntr l ed y the failure of said transferrer to .seize a blank for delivery as, aforesaid for actuatins a d l st na ed. m ans:

A a h f r O ra in 0. bl nks having, in combination, blank compressing molds; a source of supply for the blanks; a device. for transferring the blanksone ,by onefrom thesource .of supply to said com- Pr s i molds ha ng me 'ebl memb for. engaging the blanks to hold them W l b ii smns i m ans res dering said compressing molds ineifective, saidmeans being. normally inactive but frendered active by thefailure o f said movable mem m ses b ank- I H ii A machine for operating on blanks having, in combination, blank compressing nolds .a. device for seizing andtransferring blanks to said compressing molds; means for presenting blanks o ne by one into the field of operation of said device; andmeans controlled by the failure of said device to seize ablank for renderingsafid compressing molds ineffective to perform their normal function. I

33;'A. machine for operating on, blanks ha in q mb n t n, Qp m s m an a an. operating station, a step by-s tep blank .conveyer adapted to s'uccessively advance a series ofblanks to a transfer station, a blank transferrer at said transfer station, a .inovable device adjacent said station forcontrolling the operation, of said operating means, and a movable member at said station under control of said blank transferrer adapted to be moved toa position of direct cooperation Withsaid device Whenever said transferrer. fails to seize a blank, and to be actuated by the movement of said transferrer in .a direction to engage said device and move it to a position for effecting a modified operation of said operating means. E A T iE-SW NKLEY- J Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,553,350, granted September 15, 1925, upon the application of Erastus E- Vinkley of Lynn, lvlassachusetts, for an improvement in Feed Mechanisms, errors appear in the printed specification requiring correction as follows: Page 1, line 74, for the Word or read of; page 3, line 110, for the Word level read lever; page 8, lines 21 and 22, for the misspelled Word Norma-1y read Normally; page 10, line '73, claim 8, for sompressing read compressi irq, and line 130, claim 13, after the word reciprocatinp; insert the Word idly; page 12, line 52, claim 30, strike out the word first and insert the same after the Word said in line 53, same claim and that the said Letters Patent should be read with. these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 8th day of December, A, D. 1925.

[SEAL] WM. A. KINNAN',

Acting Commissioner of Patents. 

